Abstract

Transmission characteristics of lens-duct, Cytop planar photonic crystal waveguide (PPCW) and hollow-core microstructured optical fiber were analyzed in the terahertz (THz) region. The lens duct was able to channel and couple the THz radiation into a Teflon waveguide with a loss of about 0.7dB. Single-mode propagation and frequency-selective properties were achieved using PPCW whose central frequency is at 0.45THz. Results of time-domain spectra of the hollow-core microstructured polymer optical fiber showed a difference of about 20ps between the THz waves that propagated in the core and cladding. Frequency shift of the transmission bands between waveguides of different size suggested photonic bandgap guidance. Finite-difference time domain calculations agreed relatively well to the experimental results of PPCW and hollow-core fibers.

© 2009 Optical Society of America

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